Study of Cr (III) biosorption in a fixed-bed column

Calero, M.; Hernáinz, F.; Blázquez, G.; Tenorio, G.; Martín-Lara, M.A.

doi:10.1016/j.jhazmat.2009.06.082

Cited by 235 publications

(136 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Various mathematical equations were used to describe column adsorption process. The adsorption kinetics data of MB using geopolymer were analyzed with Thomas [34], Adams-Bohart [35] and Yoon-Nelson…”

Section: Colum Adsorption Studiesmentioning

confidence: 99%

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

et al. 2018

View full text Add to dashboard Cite

Abstract. Cationic dye adsorption from aqueous solution onto synthesized geopolymer was investigated by batch and fixed bed column experiments. The geopolymer material was elaborated by alkali solution and fly ash supplied by Jorf Lasfar power plant of Morocco. Physical and chemical characteristics of samples were determined by FX, DRX, SEM, 29 Si MAS NMR and Zeta potential methods. The Brunauer, Emmett and Teller (BET) technique is used to determine the surface area. The Barrett-Joyner-Halenda (BJH) method was performed to obtain pore size distribution curves and average pore diameter. Kinetics data were analyzed using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. To predict the breakthrough curves and determine the main fixed bed column parameters, three kinetic models; Tomas, Bohart-Adams and YoonNelson models are applied to fitting the experimental data. The kinetic study showed that the pseudo-secondorder can be used to describe the methylene blue (MB) adsorption process on the geopolymer matrix. The kinetic models of the adsorption in dynamic column are suitable to describe the continuous adsorption process of dyestuff by the geopolymer. The results of this study indicated that geopolymer derived from fly ash can be used as a low cost effective adsorbent for cationic dye removal from industrial aqueous effluent.

show abstract

Section: Colum Adsorption Studiesmentioning

confidence: 99%

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

et al. 2018

View full text Add to dashboard Cite

show abstract

“…6, it is observed that as the mass of adsorbent increased, both the exhaustion time and effluent volume V eff increased. With the increase in the mass of adsorbent, the V eff increased, which might be due to the more contact time between the adsorbent and the adsorbate [24]. As observed in Table 2, when the mass of adsorbent was enhanced to 10 g, exhaustion time increased.…”

Section: Fixed-bed Breakthrough Curves At Different Mass Of the Adsormentioning

confidence: 87%

“…With the increase in influent CFX concentration from 30 to 100 mg/l, the uptake and corresponding total CFX adsorbed were found to increase from 1.78 to 2.17 mg/g and 25.3 to 33 mg, respectively (Table 2). This trend may be due to higher driving force gradient in the higher influent CFX concentration to overcome the mass transfer resistance [24]. The highest removal efficiency (Y = 56.5 %) was obtained for the inlet CFX concentration of 30 mg/l.…”

Section: Fixed-bed Breakthrough Curves At Different Influent Cfx Concmentioning

confidence: 92%

Fixed-Bed Adsorption of Cephalexin Onto Walnut Shell-Based Activated Carbon

Nazari¹,

Abolghasemi²,

Esmaieli³

2017

ChChT

View full text Add to dashboard Cite

show abstract

“…Packed bed column experiments were performed using glass columns (2.5 cm internal diameter, 10 cm column length; Bio-Rad, Hercules, USA). The effect of flow rate as well as the bed depth was previously tested on different types of biosorbents (Calero et al 2009;Vinodhini & Das 2010). The adsorption efficiencies were higher at lower flow rates (Q, ml/min) and the most often used flow rates ranged between 1 and 10 ml/min.…”

Section: Materialmentioning

confidence: 99%

“…Metal uptake capacities also increase with increasing bed height (Z, cm). Parameters Q (1 ml/min) and Z (approximately 10 cm) were optimized using literature data (Calero et al 2009;Vinodhini & Das 2010) and kept constant during the experiment. The pH values were set to 3, 4.5 and 7 for the experiment (with pH ~7 being the original pH of the treated water).…”

Section: Materialmentioning

confidence: 99%

Biosorption of Cr(VI) from natural groundwater and the effect of DOC-rich treated water on Cr dissolving from contaminated soil

Šillerová¹,

Vaněk²,

Chrastný³

et al. 2015

Soil & Water Res.

View full text Add to dashboard Cite

AbstractŠillerová H., Vaněk A., Chrastný V., Komárek M. (2015): Biosorption of Cr(VI) from natural groundwater and the effect of DOC-rich treated water on Cr dissolving from contaminated soil. Soil & Water Res., 10: 236-243.Brewers draff and grape waste were used as efficient biosorbents for removing Cr(VI) from contaminated groundwater. Additionally, the interactions between the dissolved organic carbon-rich (DOC-rich) treated water and a soil contaminated with Cr(III) was further studied. The breakthrough curves obtained from column (dynamic) adsorption experiments showed higher adsorption efficiency of grape waste compared to brewers draff. The adsorption efficiency was 36.8-40.4% for brewers draff and 56.6-68.3% for grape waste, depending on the initial pH. The detected saturation time was approximately three times higher than in our previous study, where a model solution of Cr(VI) was used. The natural groundwater showed to be rich in dissolved organic matter after the treatment. The consequent interaction of the treated water with the soil led to a partial dissolution of Cr from the contaminated soil (corresponding to < 1% of total soil Cr) in the case of brewers draff, but also to adsorption of the residual Cr from the treated water to the soil in the case of grape waste. The obtained data demonstrated that Cr(III), when abundant in soils, could be potentially mobilized by the DOC-rich solution. On the other hand, the risk associated with this secondary Cr mobilization and its subsequent migration in soils (or sediments) seems to be very low or even negligible.

show abstract

Study of Cr (III) biosorption in a fixed-bed column

Cited by 235 publications

References 26 publications

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

Fixed-Bed Adsorption of Cephalexin Onto Walnut Shell-Based Activated Carbon

Biosorption of Cr(VI) from natural groundwater and the effect of DOC-rich treated water on Cr dissolving from contaminated soil

Contact Info

Product

Resources

About